Create a TableView and apply the following CSS file:

.table-cell {
    -fx-alignment: center-left;
}

.table-row-cell {
    -fx-cell-size: 50px;
}

The text in the table cells will be aligned top-left instead of center-left, Screenshot: https://dl.dropboxusercontent.com/u/84552/issues/rt-34446_1.png.
If you change the CSS to:

.table-cell {
    -fx-alignment: center-right;
}

Now the text will be aligned to the center-right position like expected, Screenshot: https://dl.dropboxusercontent.com/u/84552/issues/rt-34446_2.png.

Please find some code to test it here: https://dl.dropboxusercontent.com/u/84552/issues/rt-34446.zip